4081191578 has 16 divisors (see below), whose sum is σ = 6277910184. Its totient is φ = 1988663040.

The previous prime is 4081191523. The next prime is 4081191637. The reversal of 4081191578 is 8751911804.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2499300049 + 1581891529 = 49993^2 + 39773^2 .

It is a super-2 number, since 2×4081191578² = 33312249392676260168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50276 + ... + 103392.

Almost surely, 2^4081191578 is an apocalyptic number.

4081191578 is a deficient number, since it is larger than the sum of its proper divisors (2196718606).

4081191578 is a wasteful number, since it uses less digits than its factorization.

4081191578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54097.

The product of its (nonzero) digits is 80640, while the sum is 44.

The square root of 4081191578 is about 63884.2044483611. The cubic root of 4081191578 is about 1598.0694917000.

The spelling of 4081191578 in words is "four billion, eighty-one million, one hundred ninety-one thousand, five hundred seventy-eight".